Tank-pump



Jan. 13, 1959 E. RITTERSHOFER TANK-PUMP 2 Sheets-Sheet 1 Filed April 1e, 1 ,955

Jan. 13, 1959 E. RITTERsHoFl-:R 2,868,132

TANK-PUMP Filed April 16, 1953 f 2 Sheets-Sheet 2 AAAA 1mm/wx 2,868,132 vTANK-ruim gon.Rittershofen-Karlsruhe-Durlach, Germany, assigner to Nikolaus Laing, Stuttgart, Germany Application April` 16, 195s, serial 10.349,2'39 Claims priority, application Germany April 24, 1952 7 Claims. (cl. 10s-m) fg--This` invention isconcerned with a portable pump comprising a pump unit provided with a propeller element, a motor disposed outside said pump-unit, and means for `removably connecting said motor with the pump-unit.

Prior pumps had t-he disadvantage,l that the exchange of the motor or pump-unit was comparatively diicult and aiforded much work. According to the invention the disadvantage has been avoided by connecting the shaft of the motor, disposed outside the pump-unit, with the shaft ofthe propeller element by a simple clutch and by connecting the motor-housing, which forms the vlength yof the riser conduit. The pump according tothe,

invention may therefore be used for handling liquids in they chemical industry. Pump-units made of physiologically harmless 'articial material `can also be employed in fother industries,-for example, dairies.

The invention will now be described with reference tol examples shown in the accompanying drawings, wherein:

Fig. 1 shows an elevational View of an electric motor `to be used as a driving motor;

Fig. 2 showsv in similar representation an internal combustion motor for driving the pump-unit; n

Fig. 3 shows a pump-unit partly inlongitudinal section;

Fig. 4 is a longitudinal section of a pump-unit lwith a pump-unit shaft moving in a supporting tube;

Fig. '5 is a part sectional view of a pump-unit without supporting tube for the pump-unit shaft; Fig. 6 shows a part sectional view of a pump-unit with aV feed screw;

Fig. 7 shows a part sectional view `of a pump-unit with aflexible riser conduit and exible `pump shaft; WFig. 8 indicates a pump-unit made as a stirrer'and removed from the riser conduit; andl f if Fig. 9 indicates a measuring device disposed at the discharge of the pump-unit. i

The electric motor shown in Figure 1 has a fastening .2 serving as connection to the pump-unit and according to. the invention provided with la flange 1 forming a handle. Out of the fastening 2 rises the motor driving shaft provided with a clutch partf3. The ange 1 not only facilitates the handling of the pump, itis also possible to ange the pump unit easily, when mounting at a permanent place is desired. y

The electric motor may be operated from a suitable current supply including a battery, for example, the battery of a vehicle. The rating .of the motor will depend 2,868,132 Patented Jan. 13, 1959 2 upon the transferring capacity in accordance with the viscosity of the liquid to be handled.

The internal combustion motor indicated in Fig. 2, which can also be a small fuel motor, has also a flange 1 and a cylindric fastening 2 whilst the driving shaft has a clutch part 3. The driving shaft is operated by the crank shaft of the motor over a driving gear with the necessary gear-ratio. A drivinggear may also be employed in the structure shown in Fig. 1.

The use of a `combustion motor makes the working of the pump independent of a commercial current supply. w a.

The construction of the upper part of a pump-unit, to be connected with the driving motor, is apparent from Figs. 3 to 9. `The hollow cylindricalpart 4 of the pumpunit, takes up the cylindrical fastening 2 of the motor and is latched by a bayonet pin 6. -On mounting the motor its clutch part 3 contacts the clutch part 5 mounted on the upper end of the riser conduit. ,V

The pump-unit shown in Fig. 4 has an upper housing part 7 with a hollow cylindrical part 4 just as in Fig. 3. The riser conduit 11 can be removed from the part 7, e. g. by fastening it by means of joint 12. The easy disconnection of the riser conduit from the upper housing part of the pump-unit facilitates lthernounting and allows a completecleaning of the inner part of the pump. The riser conduit 11 has `on its top a discharge 1,9.

yThe upper part 7 of the pump unit takes up in a cen-n tralized bore the upperbearing as well as the gasket belonging to`it. The shaft 16 of the pump-unit movesv according to the invention, in a supporting pipe 8 fitted inthe riserconduit 11, if necessary filled with damping liquid, and has at its lower end one or several exchangeable propeller elements 18. The supporting pipe 8 is fastened on its upper end by the upper housing part 7, while its lower end carries the pump-element support 13.

The pump-element support 13 carries the lower bearing.

14 of the shaft 16 and the gaskets 15 belonging to them. The shaft16 emerges from the support 13 carrying at its free end exchangeableA propeller elements 1S. i

According to a further feature of the invention the lower part of the riser conduit 11 is provided with a suction slot 20, covered by an exchangeable strainer plate 21. The propeller element reachesinto the lower part of the pump-unit, bearing the suction slot, so that thev pump is able to transfer liquid as long as the riser conduit dips thereinto. The suction slot is protected against ingress of small parts, which might lead to clogging 4of the pump, by the strainer plate which may be xed or exchangeable.

The support 13 for `the y-propellel element is fitted in the lower part of the riser conduit 11 and mounted on the lower end of the supporting pipe 8 thus also' advantageously serving for conducting the transferring liquid. If the riser conduit has a greater length the swinging of the pump unit shaft can be suppressed not only by a damping liquid but also by one or several support bearings which are arranged inside the conduit.`

From Fig. 5 it will be seen that the shaft 26 of they pump-unit moves in the transferring liquid without supporting tube. rThe pump-element support 23, which also serves for conducting the liquid takes up the lower bearing 24 of theshaft of the pump-unit together with thegasket 25 and is interrupted by the suction slot 27. The support 23 forthe propeller element is iixed after the riser conduit has been mounted, by nuts or other means in such conduit. `lf'the riser pipe has a great length, the corresponding longery shaft of the `pump-unit may be journalled in one or several bearings 28.

The pump-unit shaft 29 as shown in Fig. 6 is provided for part of its length with a feed screw. The bottom E closure 30 of the riser conduit 31 takesA up the lowei bearing 32 with the gaskets 33. The suction slots 34 are near the lower end of the conduit 31 or in the bottom closure as shown at 35.

As shown in Fig. 7, the riser conduit may be a flexible tube and' drive shaft may also be flexible. O'n the housing part 37 of the pump-unit, which can beconstruc'ted as is shown in the previousV embodiments', is provided the flexible tube forming the riser'conduitf 36. Corre spondingly the pump-unit shaft 41V is also constructed asr flexible shaft, and is protected against the transferring liquid by the tube 42. The-lower end 40 of the conduit 36 is'inexible for a short'4 length, in-order to be ableto fasten the support of the pump-element 38. The pump-v ing wheel 39 driven by shaft 41 is protected against mechanical damage and fits inside the support 38; The exible conduit of this pump unit allows the drawing'off o liquids from relatively inaccessible places. Y

The example- Fig'. 8 shows the pump-unit. transformed into a stirrer or emulsifi'er, by dismou-nting' the riser conduit and replacing the pump wheel or wheel'srbyl'one or several stirring wheels 43. I

According to Fig. 9, there is-a calibrated-receptacle V44 provided with a tap 46 connected with the discharge 159' of the pump unit, which takes' upl any desired quantity of liquid determinedL bythe position of the -overowsloty regulated by the lever 45. When the desired quantity ofV liquid is passed, the overflowing liquid stops. the driving' motor automatically. It-.is advantageous-to have' a` transparent measuring receptacle so as' to be able to read' the scale provided thereon;

The last described embodiment is especially ativan-- tageous for installationsl wherer a xed quantity ofliq'uid is always to be handled,- e. g.*0.5 litre, 1.0 litre, 1.5 litre, etc. After switching on the pump, the' receptacle 44 fills up to the regulated overow slot.- T-h'e; overow; ing liquid flows by means of an overflow conduitback into the tank and causes al switch to operate, which' stops the tank-pump automatically. The measured liquid-is discharged by the tap 46.' y

In order to transfer continually, all overflow slots are closed by the lever 45 so that the transferred liquid can saidhousing on said riser conduit at the end thereof which is adjacent said discharge means, the shaft of said motor extending axially centrally of said riser conduit when the motor is inserted in said housing and the latter mounted on said riser conduit, and clutch means carried by said motor shaft for engagement, within said housing, with cooperating clutch means carried by said drive shaft so as to connect said motor shaft in driving relationship with said drive shaft solely responsive to manual insertion of said motor while effecting release of said driving relationship solely responsive to manual removal of said motor.

2. A structure and cooperation of parts according to claim 1, comprising a perforated strainer plate disposed in said riser conduit adjacent the inlet openings formed therein.

3. A structure and cooperation of parts according to claim 1, comprising a tubular shell surrounding said drive shaft within said r-iser conduit, said tubular shell containing damping fluid,` and means for connecting said shell with said housing.v

4. A structure and cooperation of parts according to claim l,.cornprising means carried. by said `motor and forming a handle therefor to facilitate manipulation thereof incident to insertion of the motor into and removal thereof from said housing.

5. A structure and cooperation of parts according to claim 1, comprising means, disposed within said riser conduit in the vicinity of the end thereof whichis to be immersed in the liquid to be processed, for rotatably supporting said drive shaft at a point axially inwardly n spaced fromsaid propeller element'.

only ow off at the tap 46. The overow slotsz deter-V mine the quantities to be discharged, Y. For quantitieslying between the fixedones on the scale, the nexthigher quantity marked on the lever is taken. After the automatic stopping of the tank-pump the lever is regulatedin a manner that the overiiow slot corresponding to` the next lower quantity workslike a tap, so that the surface of the liquid can be let down-to the desired quantity.

Changes may be madefwithin the scope andspirit of the appended claims.

I claim:

1. A portable pump adapted to be manipulated by handwith respect to a liquid to be processed thereby, comprising a tubular riser conduit having the configura tion of a pipe with uniform outer diameter throughout its length, one end ofsaid riser conduit to be immersed' in the liquid which is to be processed, dischargemeans extending from said riser conduit in the vicinity ofthe other end thereof', a drive shaft axially disposed in said riser conduit and extending longitudinally therewithin, a propeller element carried by said drive shaft in the vicinity of the end of saidl riser conduit which is-to be immersed in the liquid tobe-processed, said propellerele'l ment being axially removable from saiddrive shaft, inlet openings` formedinsaid riser conduit at theend thereof' which is adjacent said. propeller` element, means forrotatably supportingsaid drive'shaft within saidriser: con-v duit, amotor for driving, said drivershaft, a housinggfor` saidmotor which is manually removably inserted thereinto, means for axially manually removably mounting 6. A structure and cooperation of parts according to claim 1, comprising tubular means, disposed withinsaid riser conduit at the end thereof which is to be immersed in the liquid tovbe-processed, means for rotatably journalling said drive shaft in said tubular means at a point axially inwardly spaced from said propeller element, said tubular means forming a skirt surrounding said propeller element.

7'. A structure and cooperation of parts according to claim 1.,. comprising a tubular shell surrounding said drive shaft vwithin said riser conduit throughout the length of said drive shaft, bearing means in said shell for rotatably journalling said drive at a point axially inwardly spaced from said propeller element, said shell forming a skirt extending therefrom and surrounding said propeller element, the opposite end of said shell being connected with said housing, said shell forming withsaid drive shaft and said housing a unit which is manually removable from said riser conduit.

Referencesr Cited in the file of this patent UNITED STATES PATENTS 738,244 Roth Sept. S, 1903 975,526 Hood Nov. 15, 1910 1,801,103 Mummert Apr. 14, 1931 1,832,890 Antisell NOV. 24, 1931 2,277,836 Arnold Mar. 31, 1942 2,614,501 Baker Oct. 21, 1952 2,617,669 Ruthman et al. Nov. 11, 1952 FOREIGN PATENTS 57,567 Denmark Mar. 6, 1940 264,704 Switzerland Ian. 16, 1950 284,909 Italy Apr. 27, 1931 500,204 Germany June 19, 1930 504,047 Germany July 30, 1930 819,226 i France luly 5, 1937 863,426 France Apr. l, 1941 

